Chris@102: /*=============================================================================
Chris@102:     Copyright (c) 2001-2014 Joel de Guzman
Chris@102: 
Chris@102:     Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@102:     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@102: ==============================================================================*/
Chris@102: #if !defined(BOOST_SPIRIT_X3_LITERAL_STRING_APR_18_2006_1125PM)
Chris@102: #define BOOST_SPIRIT_X3_LITERAL_STRING_APR_18_2006_1125PM
Chris@102: 
Chris@102: #if defined(_MSC_VER)
Chris@102: #pragma once
Chris@102: #endif
Chris@102: 
Chris@102: #include <boost/spirit/home/x3/core/parser.hpp>
Chris@102: #include <boost/spirit/home/x3/core/skip_over.hpp>
Chris@102: #include <boost/spirit/home/x3/string/detail/string_parse.hpp>
Chris@102: #include <boost/spirit/home/x3/support/utility/utf8.hpp>
Chris@102: #include <boost/spirit/home/support/char_encoding/ascii.hpp>
Chris@102: #include <boost/spirit/home/support/char_encoding/standard.hpp>
Chris@102: #include <boost/spirit/home/support/char_encoding/standard_wide.hpp>
Chris@102: 
Chris@102: #include <boost/type_traits/is_same.hpp>
Chris@102: #include <boost/type_traits/add_reference.hpp>
Chris@102: #include <string>
Chris@102: 
Chris@102: namespace boost { namespace spirit { namespace x3
Chris@102: {
Chris@102:     template <typename String, typename Encoding,
Chris@102:         typename Attribute = std::basic_string<typename Encoding::char_type>>
Chris@102:     struct literal_string : parser<literal_string<String, Encoding, Attribute>>
Chris@102:     {
Chris@102:         typedef typename Encoding::char_type char_type;
Chris@102:         typedef Encoding encoding;
Chris@102:         typedef Attribute attribute_type;
Chris@102:         static bool const has_attribute =
Chris@102:             !is_same<unused_type, attribute_type>::value;
Chris@102:         static bool const handles_container = has_attribute;
Chris@102: 
Chris@102:         literal_string(typename add_reference<String>::type str)
Chris@102:           : str(str)
Chris@102:         {}
Chris@102: 
Chris@102:         template <typename Iterator, typename Context, typename Attribute_>
Chris@102:         bool parse(Iterator& first, Iterator const& last
Chris@102:           , Context const& context, unused_type, Attribute_& attr) const
Chris@102:         {
Chris@102:             x3::skip_over(first, last, context);
Chris@102:             return detail::string_parse(str, first, last, attr);
Chris@102:         }
Chris@102: 
Chris@102:         String str;
Chris@102:     };
Chris@102: 
Chris@102:     namespace standard
Chris@102:     {
Chris@102:         inline literal_string<char const*, char_encoding::standard>
Chris@102:         string(char const* s)
Chris@102:         {
Chris@102:             return literal_string<char const*, char_encoding::standard>(s);
Chris@102:         }
Chris@102:     }
Chris@102:     using standard::string;
Chris@102: 
Chris@102:     namespace extension
Chris@102:     {
Chris@102:         template <int N>
Chris@102:         struct as_parser<char[N]>
Chris@102:         {
Chris@102:             typedef
Chris@102:                 literal_string<
Chris@102:                     char const*, char_encoding::standard, unused_type>
Chris@102:             type;
Chris@102: 
Chris@102:             typedef type value_type;
Chris@102: 
Chris@102:             static type call(char const* s)
Chris@102:             {
Chris@102:                 return type(s);
Chris@102:             }
Chris@102:         };
Chris@102: 
Chris@102:         template <int N>
Chris@102:         struct as_parser<char const[N]> : as_parser<char[N]> {};
Chris@102: 
Chris@102:         template <int N>
Chris@102:         struct as_parser<wchar_t[N]>
Chris@102:         {
Chris@102:             typedef
Chris@102:                 literal_string<
Chris@102:                     wchar_t const*, char_encoding::standard_wide, unused_type>
Chris@102:             type;
Chris@102: 
Chris@102:             typedef type value_type;
Chris@102: 
Chris@102:             static type call(wchar_t const* s)
Chris@102:             {
Chris@102:                 return type(s);
Chris@102:             }
Chris@102:         };
Chris@102: 
Chris@102:         template <int N>
Chris@102:         struct as_parser<wchar_t const[N]> : as_parser<wchar_t[N]> {};
Chris@102:     }
Chris@102: 
Chris@102:     using standard::string;
Chris@102: 
Chris@102:     inline literal_string<char const*, char_encoding::standard, unused_type>
Chris@102:     lit(char const* s)
Chris@102:     {
Chris@102:         return literal_string<char const*, char_encoding::standard, unused_type>(s);
Chris@102:     }
Chris@102: 
Chris@102:     template <typename String, typename Encoding, typename Attribute>
Chris@102:     struct get_info<literal_string<String, Encoding, Attribute>>
Chris@102:     {
Chris@102:         typedef std::string result_type;
Chris@102:         std::string operator()(literal_string<String, Encoding, Attribute> const& p) const
Chris@102:         {
Chris@102:             return '"' + to_utf8(p.str) + '"';
Chris@102:         }
Chris@102:     };
Chris@102: }}}
Chris@102: 
Chris@102: #endif